jawadsiddiqui/java-backend-services

Java, Spring, Design Patterns Examples

Java - Problem Solvings, Examples

Interview Topics / Questions

• 12 Factor App Development Methodology
• Crack The System Design Interview
• Java 8 New Features
• Algorithms & Data Structure
• OOPS concepts
• Design patterns
• Creational patterns (Abstract factory, Builder, Dependency injection, Factory method, Lazy initialization, Object pool, Resource acquisition is initialization, Prototype, Singleton)
• Structural patterns (Adapter, Bridge, Composite, Decorator, Facade, Flyweight, Front controller, Marker, Module, Private class data, Proxy, Twin)
• Behavioral patterns (Blackboard, Chain of responsibility, Command, Interpreter, Iterator, Mediator, Memento, Null object, Observer, PubSub, Servent, Specification, State, Strategy, Template method, Visitor)
• Concurrency patterns (Active object, Balking, Binding properties, Compute kernel, Double-checking lock, Event-based synchronization, Guarded suspension, Join, Lock, Messaging desing-pattern, Monitor object, Reactor, Read-write lock, Scheduler, Thread pool, Thread-specific storage)

Design Patterns

• Creational ( Builder, Abstract Factory, Factory, Singleton
• Microservice patterns
• Messaging patterns
• Anti patterns

Cloud Based Design Patterns

• Throttling
• Retry
• Resilience patterns ( Circuit Breaker Pattern, Saga)

• Functional programming

• Reactive programming

• Architectures (MVC - Model view controller, MFE - Microfrontend, 12 factors app)

• MSA - Microservice architecture (Domain driven design, Stateless services, SAGA, CQRS, Event Sourcing, Circuit breaker)

• Collections File IO, NIO, Multithreading, Exception handling, Generics, Synchronisation, Serialisation & De-serialisation, Concurrent collection, Garbage Collection,JDBC (Java Database Connectivity),Servlet ,Log4J / SLF4J)

• JDK8 (Streams, Lambda, Optional, Future, CompletableFuture, Modules) -

• Spring, SpringBoot, JPA / Hibernate, Spring Security (OAuth2, JWT) , Spring Batch, Spring Cloud

• JUnit, Mochito, Netflix OSS, Zuul, Eureka, ConfigServer, FeignClient

• Maven, Gradle, Thymeleaf, Quartz,

• Backing Systems - Message Brokers (Kafka ,ActiveMQ ,RabbitMQ)

• NoSQL Databases (Redis ,MongoDB ,Cassandra)

• SQL Databases (MySQL ,MS SQL Server)

• DevOps (Dockers ,Jenkins ,Groovy ,CI/CD pipeline ,Kubernetes ,Pivotal Cloud Foundary) Google Could Platform

• Automation (Cucumber (BDT) ,TestNG ,RestAssured ,Gatling ,JMeter)

Microservices Projects

• department-service Microservice
• user-service Microservice
• service-registry

Recommended Books

• Java The Complete Reference
• Head First Start Design Pattern

(Leet Code Study Plan)[https://leetcode.com/study-plan/]

java-backend-services's Issues

repo structure fix